refactor(sync): replace temporary variable pointer pattern with new() builtin

Simplify GetDeviceStatus return by using inline new() instead of
assigning to a local variable and returning its address.

internal/sync/offline.go

@@ -226,8 +226,7 @@ func (d *OfflineDetector) GetDeviceStatus(ctx context.Context, deviceID pgtype.U
 		return nil, err
 	}
 
-	status := d.getDeviceStatus(device)
-	return &status, nil
+	return new(d.getDeviceStatus(device)), nil
 }
 
 func (d *OfflineDetector) ListOfflineDevices(ctx context.Context) ([]DeviceOnlineStatus, error) {